Onalaska in May
7.1out of 10
Possible, with caveats
Mild: highs around 21°C. Frequent rain: about 13 rainy days.
21°CAvg high
10°CAvg low
13Rainy days (106 mm)
14:33 hDaylight
05:45Sunrise · 20:18 Sunset
Why this score
- Mild: highs around 21°C
- Frequent rain: about 13 rainy days
What to wear and pack
- Layers you can add or remove
- A light jacket for cooler evenings
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in May is fairly consistent from year to year (2.6 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -3°C | -12°C | 32 mm | 7 | – | – | 4.2 |
| February | 0°C | -9°C | 31 mm | 6 | – | – | 4.3 |
| March | 7°C | -3°C | 58 mm | 9 | – | – | 5.1 |
| April | 14°C | 3°C | 92 mm | 12 | – | – | 6.2 |
| May | 21°C | 10°C | 106 mm | 13 | – | – | 7.1 |
| June | 26°C | 16°C | 121 mm | 12 | – | – | 7.2 |
| July | 28°C | 18°C | 98 mm | 11 | – | – | 7.6 |
| August | 26°C | 16°C | 92 mm | 10 | – | – | 7.7 |
| September | 23°C | 12°C | 81 mm | 10 | – | – | 7.8 |
| October | 15°C | 5°C | 72 mm | 9 | – | – | 6.7 |
| November | 6°C | -1°C | 51 mm | 7 | – | – | 5.4 |
| December | -1°C | -8°C | 39 mm | 7 | – | – | 4.1 |
Frequently asked questions
How hot is Onalaska in May?
Daytime highs average 21°C and nights about 10°C.
When is the best time to visit Onalaska?
The best months are September, August, July, June.